procname is a simple LD_PRELOAD library that sets the process name on Linux to the name specified in the environment variable PROCNAME. This allows Java programs to show up in top or ps acux as their logical name rather than the generic java. It could also be useful for other language runtimes such as Python or Ruby.
Run Java with the LD_PRELOAD and PROCNAME environment variables set:
LD_PRELOAD=/path/to/libprocname.so PROCNAME=hello java -jar foo.jar